Remove setup.py (#842)

.github/workflows/ci.yml

@@ -102,7 +102,6 @@ jobs:
           - {VERSION: "pypy-3.10", TOXENV: "pypy3"}
 
           # MSRV
-          - {VERSION: "3.12", TOXENV: "py312", RUST_VERSION: "1.63.0"}
           - {VERSION: "3.12", TOXENV: "py312", RUST_VERSION: "1.64.0"}
           - {VERSION: "3.12", TOXENV: "py312", RUST_VERSION: "beta"}
           - {VERSION: "3.12", TOXENV: "py312", RUST_VERSION: "nightly"}
@@ -130,8 +129,6 @@ jobs:
           toolchain: ${{ matrix.PYTHON.RUST_VERSION || 'stable' }}
 
       - run: pip install tox
-      - if: matrix.PYTHON.RUST_VERSION == '1.63.0'
-        run: echo 'BCRYPT_ALLOW_RUST_163=1' >> $GITHUB_ENV
       - run: tox
         env:
           TOXENV: ${{ matrix.PYTHON.TOXENV }}

pyproject.toml

@@ -1,9 +1,8 @@
 [build-system]
-# Must be kept in sync with `setup_requirements` in `setup.py`
 requires = [
     "setuptools>=42.0.0",
     "wheel",
-    "setuptools-rust",
+    "setuptools-rust>=1.7.0",
 ]
 # Point to the setuptools' PEP517 build backend explicitly to
 # disable Pip's fallback guessing
@@ -50,6 +49,11 @@ readme = {file = "README.rst", content-type = "text/x-rst"}
 tests = ["pytest>=3.2.1,!=3.3.0"]
 typecheck = ["mypy"]
 
+[[tool.setuptools-rust.ext-modules]]
+target = "bcrypt._bcrypt"
+path = "src/_bcrypt/Cargo.toml"
+py-limited-api = "auto"
+rust-version = ">=1.64.0"
 
 [tool.ruff]
 line-length = 79

tox.ini

@@ -35,7 +35,7 @@ deps =
     readme_renderer
 commands =
     check-manifest
-    python setup.py check --metadata --restructuredtext --strict
+    python3 -m readme_renderer README.rst -o /dev/null
 
 
 [check-manifest]